A mirror of Mastodon (hosted on github)
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Eugen Rochko e12fb42918 Bump rails from to 2 years ago
.circleci Set BUNDLE_PATH in CircleCI (#13214) 2 years ago
.dependabot Change dependabot update schedule from live to weekly (#10949) 3 years ago
.github Add config for issue template (#12306) 3 years ago
app Bump rails from to 2 years ago
bin Bump webpacker from 3.5.5 to 4.0.2 (#10277) 3 years ago
config Bump rails from to 2 years ago
db Add option to include resolved DNS records when blacklisting e-mail domains in admin UI (#13254) 2 years ago
dist Update nginx.conf (#13066) 2 years ago
lib Bump rails from to 2 years ago
nanobox Resync Nanobox files with the 2.9.0 release (#11083) 3 years ago
public Updated Twemoji to 12.1.3 (#12342) 3 years ago
spec Fix media not being marked sensitive when client sets a CW but no text (#13277) 2 years ago
streaming minor server-sent events fixes (#12945) 2 years ago
vendor Increase files checked by ESLint (#9705) 3 years ago
.buildpacks Add ffmpeg buildpack for scalingo (#8500) 4 years ago
.codeclimate.yml Update ESLint and RuboCop in Code Climate (#12534) 2 years ago
.dockerignore Add .bundle to .dockerignore (#7895) 4 years ago
.env.nanobox Fix sample SAML_ACS_URL, SAML_ISSUER (#12669) 2 years ago
.env.production.sample Document AUTHORIZED_FETCH mode and WHITELIST_MODE (#12856) 2 years ago
.env.test Bump webpacker from 4.0.7 to 4.2.0 (#12416) 3 years ago
.env.vagrant fix vagrant connection error (#12180) 3 years ago
.eslintignore Increase files checked by ESLint (#9705) 3 years ago
.eslintrc.js Refactor icons in web UI to use Icon component (#9951) 3 years ago
.gitignore Use eslint cache (#12668) 2 years ago
.nvmrc Upgrade .nvmrc to Node.js 12 (#12906) 2 years ago
.rubocop.yml Update ESLint and RuboCop in Code Climate (#12534) 2 years ago
.ruby-version Use Ruby 2.6.5 (#12049) 3 years ago
.sass-lint.yml Fix sass-lint config (#10982) 3 years ago
.yarnclean Replace from scss-lint to sass-lint (#10958) 3 years ago
AUTHORS.md Update AUTHORS.md (#12096) 3 years ago
Aptfile Adjust Aptfile for Heroku-18 stack (#8588) 4 years ago
CHANGELOG.md Bump version to 3.1.2 (#13162) 2 years ago
CONTRIBUTING.md Edit CONTRIBUTING.md (#12401) 3 years ago
Dockerfile [Security] Bump Node.js from 12.14.0 to 12.16.1 in Docker (#13235) 2 years ago
Gemfile Bump rails from to 2 years ago
Gemfile.lock Bump rails from to 2 years ago
Procfile Bind servers to in Procfile (#11378) 3 years ago
README.md Decommission support for Ruby 2.4 (#13287) 2 years ago
Vagrantfile Fix Node version in Vagrant (#13008) 2 years ago
app.json Remove deprecated config from Heroku and Scalingo (#11925) 3 years ago
babel.config.js Remove unnecessary dependencies (#12533) 2 years ago
boxfile.yml Correct the Nanobox deploy hooks for order and context (#12663) 2 years ago
crowdin.yml Update Crowdin configuration file 3 years ago
docker-compose.yml Add healthcheck endpoint for web (#11770) 3 years ago
package.json Bump autoprefixer from 9.7.4 to 9.7.5 (#13338) 2 years ago
postcss.config.js Increase files checked by ESLint (#9705) 3 years ago
priv-config TOR federation (#7875) 4 years ago
scalingo.json Remove deprecated config from Heroku and Scalingo (#11925) 3 years ago
yarn.lock Bump autoprefixer from 9.7.4 to 9.7.5 (#13338) 2 years ago



GitHub release Build Status Code Climate Crowdin Docker Pulls

Mastodon is a free, open-source social network server based on ActivityPub where users can follow friends and discover new ones. On Mastodon, users can publish anything they want: links, pictures, text, video. All Mastodon servers are interoperable as a federated network (users on one server can seamlessly communicate with users from another one, including non-Mastodon software that implements ActivityPub)!

Click below to learn more in a video:




No vendor lock-in: Fully interoperable with any conforming platform

It doesn't have to be Mastodon, whatever implements ActivityPub is part of the social network! Learn more

Real-time, chronological timeline updates

See the updates of people you're following appear in real-time in the UI via WebSockets. There's a firehose view as well!

Media attachments like images and short videos

Upload and view images and WebM/MP4 videos attached to the updates. Videos with no audio track are treated like GIFs; normal videos are looped - like vines!

Safety and moderation tools

Private posts, locked accounts, phrase filtering, muting, blocking and all sorts of other features, along with a reporting and moderation system. Learn more

OAuth2 and a straightforward REST API

Mastodon acts as an OAuth2 provider so 3rd party apps can use the REST and Streaming APIs, resulting in a rich app ecosystem with a lot of choices!


Tech stack:

  • Ruby on Rails powers the REST API and other web pages
  • React.js and Redux are used for the dynamic parts of the interface
  • Node.js powers the streaming API


  • PostgreSQL 9.5+
  • Redis 4+
  • Ruby 2.5+
  • Node.js 10.13+

The repository includes deployment configurations for Docker and docker-compose, but also a few specific platforms like Heroku, Scalingo, and Nanobox. The stand-alone installation guide is available in the documentation.

A Vagrant configuration is included for development purposes.


Mastodon is free, open-source software licensed under AGPLv3.

You can open issues for bugs you've found or features you think are missing. You can also submit pull requests to this repository, or submit translations using Weblate. To get started, take a look at CONTRIBUTING.md. If your contributions are accepted into Mastodon, you can request to be paid through our OpenCollective.

IRC channel: #mastodon on irc.freenode.net


Copyright (C) 2016-2020 Eugen Rochko & other Mastodon contributors (see AUTHORS.md)

This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details.

You should have received a copy of the GNU Affero General Public License along with this program. If not, see https://www.gnu.org/licenses/.